Tree diameter growth rates were measured in the Great Dismal Swamp, Virginia using vernier tree bands. Measurements were made in cypress, cedar, maple-gum, and mixed hardwood communities. Most growth occurred between mid-April and early July. Some species differences were noted but no statistically significant site differences were found. The high variability in tree growth rates in the Dismal Swamp may be a result of the high degree of microtopographic variation within and among sites which could mask possible differences caused by varied hydroperiod. Stand basal area growth was greatest on the cedar site (1.14 m2ha-1yr-1) and lowest on the mixed hardwood site (0.49 m2ha-1yr-1). Stand age and successional dynamics explain the site variation.